.wrapper {
    left: 0;
    top: 0;
    width: 100%;
    position: relative;
    height: 100%;
    background-color: #878787;
}

.pic-canvas-box, .bgCanvas {
    width: 72%;
    position: absolute;
    z-index: 555;
    left: 50%;
    margin-left: -36%;
    top: 9%;
    border: 1px solid #DDD;
}

.pic-canvas-box:before {
    content: '';
    float: left;
    display: block;
    padding: 50% 0;
}

.pic-canvas-box canvas {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0
}

.confrm-box-btn {
    position: relative;
    top: 25rem;
    width: 100%;
    display: flex;
    justify-content: center;
    z-index: 222;
}

.confrm-box-btn .btn {
    position: relative;
    top: 1.2rem;
    margin: 0 2%;
}

.confrm-box-btn .btn input {
    position: absolute;
    z-index: 22;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
}

.confrm-box-btn .btn img {
    height: 2.4rem;
}